Zigbee-technology-based digital wireless multi-channel audio conference method and device

The invention relates to a Zigbee-technology-based digital wireless multi-channel audio conference device and method. The device utilizes an optimized Zigbee transmission control protocol for transmitting digital voice signals to achieve a multi-channel wireless conference. The device comprises a plurality of acoustical signal acquisition and conversion modules for acquisition and A/D (Analog to Digital) conversion of input voice signals, a plurality of Zigbee transmission modules for wireless transmission of data frames of Zigbee, a Zigbee receiving module for wireless receiving of the data frames of the Zigbee, a Zigbee control module for the distribution of wireless transmission channels to the Zigbee transmission modules, a signal synchronization module, a signal processing module and an audio playback module, wherein one of sixteen communication channel is set to be a control channel and others are set to be data transmission channels by the optimized Zigbee transmission control protocol. The device cannot be affected by the angle of wireless signals, and participants of the conference can move freely. The device utilizes the optimized Zigbee transmission control protocol to avoid inter-channel interference and reduce the addressing and matching time.